The diagram shows two regular hexagons, OABCDE and OFGHIJ.
152
0
A
Diagram NOT
accurately drawn
C
OAF and OEJ are straight lines.
OF = 30A.
The area of OABCDE is 4 cm?.
Calculate the area of the shaded region.

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by